<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>分类参数</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片-->
    <el-card>
      <el-alert title="注意: 只允许为第三季设置相关参数" type="warning" show-icon :closable="false"></el-alert>
      <!--分类-->
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类: </span>
          <el-cascader v-model="selectedCateKeys" :options="cateList" :props="cascderProps"
                       @change="handleChange"></el-cascader>
        </el-col>
      </el-row>
      <!--tab-->
      <el-tabs v-model="activeName" @tab-click="handleClick">
        <!--添加动态参数-->
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" size="mini" :disabled="isBtnisabled" @click="addDialogVisible = true">添加参数
          </el-button>
          <el-table :data="manyList">
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">
                  {{item}}
                </el-tag>
                <!--                添加-->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag
                </el-button>
              </template>
            </el-table-column>
            <el-table-column label="##" type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" circle size="mini"
                           @click="showEditDialog(scope.row.attr_id)"></el-button>
                <el-button type="danger" icon="el-icon-delete" circle size="mini"
                           @click="showDelDialog(scope.row.attr_id)"></el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button type="primary" size="mini" :disabled="isBtnisabled" @click="addDialogVisible = true">添加属性
          </el-button>
          <el-table :data="onlyList">
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i,scope.row)">
                  {{item}}
                </el-tag>
                <!--                添加-->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag
                </el-button>
              </template>
            </el-table-column>
            <el-table-column label="##" type="index"></el-table-column>
            <el-table-column label="属性名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" circle size="mini"
                           @click="showEditDialog(scope.row.attr_id)"></el-button>
                <el-button type="danger" icon="el-icon-delete" circle size="mini"
                           @click="showDelDialog(scope.row.attr_id)"></el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <!--添加 参数属性-->
    <el-dialog
      :title="'添加'+titleText"
      :visible.sync="addDialogVisible"
      @close="addDialogClosed"
      width="50%">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRefs" label-width="80px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addParams">确 定</el-button>
  </span>
    </el-dialog>
    <!--修改 参数属性-->
    <el-dialog
      :title="'修改'+titleText"
      :visible.sync="editDialogVisible"
      @close="editDialogClosed"
      width="50%">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRefs" label-width="80px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editParams">确 定</el-button>
  </span>
    </el-dialog>

  </div>
</template>

<script>
  export default {
    data () {
      return {
        cateList: [],
        cascderProps: {
          value: 'cat_id',
          label: 'cat_name',
          childred: 'childern',
          expandTrigger: 'hover',
          checkStrictly: false
        },
        selectedCateKeys: [],
        activeName: 'many',
        manyList: [],
        onlyList: [],
        addDialogVisible: false,
        editDialogVisible: false,
        addForm: { attr_name: '' },
        editForm: { attr_name: '' },
        addFormRules: {
          attr_name: [
            {
              required: true,
              message: '不能留空',
              trigger: 'blur'
            },
            {
              min: 1,
              max: 15,
              message: '长度在 1 到 15 个字符',
              trigger: 'blur'
            }
          ]
        },
        editFormRules: {
          attr_name: [
            {
              required: true,
              message: '不能留空',
              trigger: 'blur'
            },
            {
              min: 1,
              max: 15,
              message: '长度在 1 到 15 个字符',
              trigger: 'blur'
            }
          ]
        }
      }
    },
    created () {
      this.getCateList()
    },
    methods: {
      // 获取分类信息
      async getCateList () {
        const { data: res } = await this.$http.get('categories')
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.cateList = res.data
      },
      handleChange () {
        this.getParams()
      },
      handleClick () {
        this.getParams()
      },
      async getParams () {
        if (this.selectedCateKeys.length !== 3) {
          this.selectedCateKeys = []
          this.manyList = []
          this.onlyList = []
          return ''
        }

        // 根据 所选id 以及类型 请求
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: this.activeName } })
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)

        res.data.forEach(item => {
          item.attr_vals = item.attr_vals ? item.attr_vals.split(',') : []
          item.inputVisible = false
          item.inputValue = ''
        })
        if (this.activeName === 'many') {
          this.manyList = res.data
        } else {
          this.onlyList = res.data
        }
      },
      addDialogClosed () {
        this.$refs.addFormRefs.resetFields()
      },
      editDialogClosed () {
        this.$refs.editFormRefs.resetFields()
      },
      addParams () {
        this.$refs.addFormRefs.validate(async valid => {
          if (!valid) return false
          const { data: res } = await this.$http.post(`categories/${this.cateId}/attributes`,
            {
              attr_name: this.addForm.attr_name,
              attr_sel: this.activeName
            })
          if (res.meta.status !== 201) return this.$message.error(res.meta.msg)
          this.$message.success(res.meta.msg)
          this.addDialogVisible = false
          this.getParams()
        })
      },
      // 编辑 参数属性
      async showEditDialog (id) {
        this.editForm = {}
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes/${id}}`,
          { params: { attr_sel: this.activeName } })
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.editForm = res.data
        this.editDialogVisible = true
      },
      // 删除 属性参数
      async showDelDialog (id) {
        const confirmResult = await this.$confirm('确认要删除吗', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if (confirmResult !== 'confirm') {
          return this.$message({
            type: 'info',
            message: '已取消删除'
          })
        }
        console.log(confirmResult)
        const { data: res } = await this.$http.delete(`categories/${this.cateId}/attributes/${id}}`)
        if (res.meta.status !== 200) {
          this.$message.error(res.meta.msg)
        } else {
          this.$message.success(res.meta.msg)
          this.getParams()
        }
      },
      // 修改
      editParams () {
        this.$refs.editFormRefs.validate(async valid => {
          if (!valid) return false
          const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
            {
              attr_name: this.editForm.attr_name,
              attr_sel: this.activeName
            })
          if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
          this.$message.success(res.meta.msg)
          this.editDialogVisible = false
          this.getParams()
        })
      },
      async handleInputConfirm (row) {
        if (row.inputValue.trim().length === 0) {
          row.inputVisible = false
          row.inputValue = ''
          return
        }
        console.log(row)
        // 修改
        row.attr_vals.push(row.inputValue.trim())
        row.inputValue = ''
        this.saveAttrVals(row)
      },
      showInput (row) {
        row.inputVisible = true
        this.$nextTick(_ => {
          this.$refs.saveTagInput.$refs.input.focus()
        })
      },
      // 删除标签
      handleClose (i, row) {
        row.attr_vals.splice(i, 1)
        this.saveAttrVals(row)
      },
      // 更新标签值
      async saveAttrVals (row) {
        const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,
          {
            attr_name: row.attr_name,
            attr_sel: 'many',
            attr_vals: row.attr_vals.join(',')
          })
        if (res.meta.status !== 200) {
          this.$message.error(res.meta.msg)
        } else {
          this.$message.success(res.meta.msg)
        }
      }
    },
    computed: {
      isBtnisabled () {
        if (this.selectedCateKeys.length !== 3) {
          return true
        } else {
          return false
        }
      },
      cateId () {
        if (this.selectedCateKeys.length === 3) {
          return this.selectedCateKeys[2]
        } else {
          return null
        }
      },
      titleText () {
        if (this.activeName === 'many') {
          return '动态参数'
        } else {
          return '静态属性'
        }
      }
    }
  }
</script>
<style lang="less" scoped>
  .cat_opt {
    margin: 15px 0;
  }

  .el-tag {
    margin: 10px;
  }

  .input-new-tag {
    width: 90px;
  }
</style>
